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3 years ago

12

What are the excluded values of x for

title=" \frac{x+1}{x^2-1} " alt=" \frac{x+1}{x^2-1} " align="absmiddle" class="latex-formula">
A. x = –1, x = 0, x = 1
B. x = –1, x = 0
C. x = 0, x = 1
D. x = –1, x = 1

2 answers:

NISA [10]3 years ago

8 0

Denominator:

$x^2-1=(x+1)(x-1)=\big(x-(-1)\big)(x-1)$

so excluded values are x = -1 and x = 1.

Answer D.

Nataly_w [17]3 years ago

5 0

The answer would be D. x=-1, x=1

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